CIPH-1K(X)

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Definitions:

The inverse cipher function of the block cipher algorithm under the key K applied to the data block X.
Sources:
NIST SP 800-38A

The output of the inverse of the designated cipher function of the block cipher under the key K applied to the block X.
Sources:
NIST SP 800-38F

Glossary Comments

Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document.

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See NISTIR 7298 Rev. 3 for additional details.